Protect your hearing with the SureFire EP4 Sonic Defender Plus, designed to guard against noise-induced hearing loss (NIHL) while still allowing you to hear important sounds and conversations in noisy environments. Featuring a triple-flanged stem, these earplugs provide a noise reduction rating (NRR) of 24 dB. Safe sounds can pass through the ear canal, while potentially harmful noises (above 85 dB) are filtered out by our advanced noise-reducing technology. The EP4s also come with detachable filter caps for extra protection, ideal for blocking lower-level noises, such as those encountered on an airplane, while still allowing you to hear essential sounds. Made from a soft, durable and hypoallergenic polymer, Sonic Defenders offer all-day comfort and an extended lifespan of up to 6+ months with proper care. Provides 24 dB NRR with filter caps inserted, minimizing exposure to damaging noise levels Effectively reduces potentially dangerous noise levels above 85 dB, ensuring hearing protection Patented EarLock retention rings ensure a secure fit, featuring soft, double-flanged stems for all-day comfort Constructed from hypoallergenic, medical-grade polymer for a soft, durable and long lasting fit Low-profile design ensures superior comfort when worn with masks, helmets, hats, phones, headphones or supplemental hearing muffs Compatible with select radio communication systems for reliable hands-free communication Each set is conveniently packaged in a carry case with a polymer lanyard for easy transport and storage The EP4 earpiece will not provide hearing protection if the noise reducing filter is removed, maintaining safety only with the proper components Compatible with top communication systems, ensuring seamless radio connectivity